This adds some plumbing for propagating the status and error code of a

renderer process that went away so that we can tell at the UI level
what happened to the tab: did it crash, or was it killed by the OOM
killer (or some other reason). This is in preparation for implementing
a new UI for when a process is killed by the OOM on ChromeOS which
handles it differently from a crash.

Most of the changes are modifications of the argument list to include
a status and error code for the exited process, but in addition the
following was done:

- Changed the name of DidProcessCrash to GetTerminationStatus.
- Added some new enum values to TerminationStatus enum (and named it)
in process_util.h, so it can be used as the status returned by
WhatHappenedToProcess.
- Improved process_util_unittest to actually test for crashing and
terminated processes on all platforms.
- Added a new notification for renderers that were killed.
- Added error code information to crash notification.
- Added status and error code information to renderer IPC message for
RenderViewGone.
- Added a UMA histogram count for number of renderer kills.

[This change was previously reviewed and LGTM'd:
http://codereview.chromium.org/3386014/show
but due to issues with "git cl push" was never committed to the tree.]

BUG=none
TEST=ran new unit test. Test passes on try servers.

Review URL: http://codereview.chromium.org/3869001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@63067 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 4 insertions, 3 deletions

diff --git a/chrome/browser/nacl_host/nacl_process_host.cc b/chrome/browser/nacl_host/nacl_process_host.cc
index 1ee53b9..2540d8c 100644
--- a/chrome/browser/nacl_host/nacl_process_host.cc
+++ b/chrome/browser/nacl_host/nacl_process_host.cc
@@ -162,10 +162,11 @@ void NaClProcessHost::OnProcessLaunchedByBroker(base::ProcessHandle handle) {
   OnProcessLaunched();
 }
 
-bool NaClProcessHost::DidChildCrash() {
+base::TerminationStatus NaClProcessHost::GetChildTerminationStatus(
+    int* exit_code) {
   if (running_on_wow64_)
-    return base::DidProcessCrash(NULL, handle());
-  return BrowserChildProcessHost::DidChildCrash();
+    return base::GetTerminationStatus(handle(), exit_code);
+  return BrowserChildProcessHost::GetChildTerminationStatus(exit_code);
 }
 
 void NaClProcessHost::OnChildDied() {